Improve code comments

Co-authored-by: Jeremy Wu <jeremy24wu@gmail.com>

Author: Jack251970

Flow.Launcher/Languages/en.xaml

@@ -66,7 +66,7 @@
     <system:String x:Key="PositionReset">Position Reset</system:String>
     <system:String x:Key="PositionResetToolTip">Reset search window position</system:String>
     <system:String x:Key="queryTextBoxPlaceholder">Type here to search</system:String>
-    <system:String x:Key="pluginStillInitializing">{0}: This plugin is still initializing!</system:String>
+    <system:String x:Key="pluginStillInitializing">{0}: This plugin is still initializing...</system:String>
     <system:String x:Key="pluginStillInitializingSubtitle">Select this result to requery</system:String>
     <system:String x:Key="pluginFailedToRespond">{0}: Failed to respond!</system:String>
     <system:String x:Key="pluginFailedToRespondSubtitle">Select this result for more info</system:String>